Concrete-filled steel tube column with T-shaped stiffening ribs on inner side of steel tube

A concrete column and stiffening type technology, which is applied in the direction of columns, pier columns, pillars, etc., can solve the problems of square concrete-filled steel tube structure bearing capacity, low ductility, buckling of pipe walls, and reduction of component bearing capacity.

Pending Publication Date: 2021-10-22
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

resulting in slightly poorer member constraints
Especially for square concrete-filled steel tube members with a large width-to-thickness ratio (B/t), the pipe wall is prone to local outward buckling under pressure, which further reduces the beari

Method used

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  • Concrete-filled steel tube column with T-shaped stiffening ribs on inner side of steel tube
  • Concrete-filled steel tube column with T-shaped stiffening ribs on inner side of steel tube

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Experimental program
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Embodiment Construction

[0019] The present invention provides a steel pipe with T-shaped stiffening ribs on the inner side of the concrete-filled steel pipe column. The present invention will be further described through the description of the drawings and specific implementation methods below.

[0020] When making square steel pipes with T-shaped stiffening ribs, four steel plates for making pipe walls are cut according to the predetermined size, then T-shaped stiffening ribs are welded at their predetermined positions in the longitudinal direction, and then welded into steel pipes. Due to the thinner steel plates, penetration fillet welds are used for tailor welding of steel plates. All the welding work in the production process of the test piece is welded by carbon dioxide shielded welding, and the quality of the weld seam is guaranteed to reduce the influence of welding residual stress and residual deformation on the test results. Two square steel plates with a plate thickness of 10mm are process...

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Abstract

The invention discloses a concrete-filled steel tube column with T-shaped stiffening ribs on the inner side of a steel tube. The concrete-filled steel tube column with the T-shaped stiffening ribs on the inner side of the steel tube comprises the steel tube and a T-shaped stiffening rib. The steel tube is a square steel tube and filled with concrete, The T-shaped stiffening ribs are embedded in the square steel tube and extend in the height direction of the steel tube. According to the concrete-filled steel tube column with the T-shaped stiffening ribs on the inner side of the steel tube, the longitudinal T-shaped stiffening ribs are arranged on the inner side of the steel tube wall along each side, the concrete-filled square steel tube column with the stiffening ribs is formed, local buckling of the tube wall is delayed, constraint of the tube wall on the concrete is enhanced, the bearing capacity and the deformation performance of a component are improved, and the performance of two materials of steel and the concrete can be brought into play easily.

Description

technical field [0001] The invention relates to a steel tube concrete column with T-shaped stiffening ribs on the inner side of a steel tube, belonging to the technical field of building structures. Background technique [0002] Concrete filled steel pipe is a composite structure formed by pouring concrete into steel pipes and compacting them. As we all know, concrete has high compressive strength, but its bending resistance is weak; steel has strong bending resistance and good elastic-plastic properties, but it is prone to instability and loses its axial compressive capacity when it is under compression. Through the combination of steel pipe and concrete, it not only makes up for the shortcomings of the two materials, but also gives full play to the advantages of the two, making the effect of "1+1>2". [0003] In addition to directly bearing the external load, the steel pipes wrapped in the concrete filled steel tube can also provide lateral restraint for the inner fill...

Claims

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Application Information

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IPC IPC(8): E04C3/32E04C3/34
CPCE04C3/32E04C3/34
Inventor 黄宏胡文斌曾建涛戴雨祺
Owner EAST CHINA JIAOTONG UNIVERSITY
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